They are much rougher ( in my opinion) than a good shaving gel and a MACH3.
If I use an electric, I get razor burn something fierce ( only get it with razor if I dry shave, and that don't happen much)
An electric doesn't cut near as close, I don't care what the commercials say. If you're prone to 5 o'clock shadow, you'll be getting it by about 1:30-2 with an electric.
Also, if your prone to going a few days without shaving, and electric will bring the suck pulling and basically not cutting worth a damn.